#header{
    width: 100%;
    height: 1.40625rem;
    line-height: 1.40625rem;
    background-color: #ff552e;
    color: #fff;
    z-index: 999;
    -webkit-transform: translateZ(0);
    overflow: hidden;
}

#main{
    font-size: 0;
    background-color: #fff;
    width: 100%;
    overflow: hidden;
    padding-bottom: .15625rem;
    padding-top: .15625rem;
    margin-top: 1.71875rem;
    background: #999;
}

.test{
    height: 1000px;
    width: 100px;
    background: #160;
}